Noiseless vacuum cleaner



v NOISELESS VACUUM CLEANER iled Feb. 10, 1944 2 Sheets-Sheet 1 2 W 3 fiarion if .BY I

Patented June 12,1945

NUESELESS WAQ CLEANER Lee Barton Williams, Eittsburghflf'a. Application February 10, 19M,- Sriai No. 52l,858

1 (Claim.

This invention relates to vacuum cleaners, the

primary object of the invention being to provide a vacuum cleaner wherein the suction is created by the action of bellows, which results in the carpet or rug under treatment, being alternately machine, to the bellows, on the suction operation of the bellows.

and suddenly drawn into engagement with the nozzle of the device and released, to the end that a beating action takes place at the nozzle of the machine,- liberating foreign matter from the carpet I or rug, the foreign matter being drawn into the machine by the suction created within the bellows.

' Another important object of the invention is to provide a vacuum cleaner which will be practically noiseless in operation, owing to the elimination of the noisy high-speed suction fan, commonly used in vacuum cleaner construction.

with the foregoing and other objects in view which will appear as'the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fullydescribed and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit'of the invention as claimed.

Referringto the drawings I Figure 1 is aside elevational view of a vacuum cleaner, constructed in accordance with the invention.

Figure 2 is a plan view thereof.

Figure 3 is a sectional view taken on line 3-3 of Fig. 1.

Figure 4.is a sectional view taken on line 44 of Fig. 2. 1

Referring to thedrawings in detail, the frame of the vacuum cleaner is indicated generally by the reference character 5 and embodies a nozzle section 6 which is of tubular construction, transversely disposed tubular sections ,1 and 8 and a discharge section 9. The nozzle section 6 communicates with the tubular section I, at a point intermediate its ends, and the discharge section 9 communicates with the tubular section 8, at the center thereof.

The ends of the tubular sections 1 and 8 are open, and are fitted against openings of the bellows III that have their inner walls H, bolted to the flanges I! by means of the bolts 13. Openings It are formed in the inner walls H of the bellows, so that air may pass into the bellows,

during the suction action of the bellows. In-

wardly closing flap valves l5 normally close the ends of, the tubular section I, and operate to admit air and foreign matter drawn into the Openings l6 are formed inthe inner walls I i v of the bellows, and these openings are disposed opposite to the ends of the tubular section B, establishing conmiunication between the bellows and tubular section 8. These openings are closed by means of the flap valves ll that open inwardly, under the suction stroke of the device, and close as the bellows expand. As the flap valvesll open, it will be seen that air and foreign matter contained in the air, will be forced through Mounted on the frame of the machine, and disposed adjacent to the upper end ofthe nozzle section 8, is a motor I8, the motor being braced by the bracket 20, in which it is held.

The reference character 2| designates a pulley which is secured to the lower end of the motor shaft, the pulley having a V-shaped groove, to receive the correspondingly shaped belt 22, which belt also operates in the V-shaped groove of the substantially large pulley 23 which is mounted on a shaft that extends from the upper surface of the frame of the machine. Eccentrically connected with the substantially large pulley 23, is the connecting link 24, which has pivotal connection with the arms 25, at their inner ends, the

outer ends of the arms 25 being pivotally connected with the outer or movable sides 26 of the bellows, through the brackets 21. Thus it will be seen that due to this construction, rotary moveing the bellows to the positions shown by Fig. 2, which constitutes the suction stroke of the bellows to draw air and foreign matter, into themachine. It will of course be understood that on the suction strokes of the bellows, the flap valves i l will open, admitting the air to the be]- lows, and that upon collapsing of the bellows, the fla valves l1 will open while the valves M are closed. The only exit for the air in the bellows. will be through the valves 81, to the end that the air and foreign matter will be forced through the discharge section 9 and deposited in the v bag l8.

affords means whereby ready access may be had to the interior of the bellows for repair or cleaning purposes.

Th handle of the machine'is indicated by the reference character 28 and may be of any convenient construction to facilitate the operation of the vacuum cleaner.

From the foregoing it will be seen that due to the construction shown and described, I have provided a vacuum cleaner wherein the suction through the machine is created by means of bellows, mounted at opposite sides thereof, the bellows operating silently, providing a vacuum cleaner which is noiseless.

It might be further stated, that the suction created by the bellows, will cause the rug or carpet over which the vacuum cleaner is being moved, to be suddenly drawn into engagement with the nozzle 01' the machine, and then released, providing the same result as a beater, commonly used in vacuum cleaner structure, for releasing the dirt or foreign matter, to be picked up during the suction strokes of the bellows.

What is claimed is:

A vacuum cleaner comprising a frame, including a nozzle, spaced transversely disposed upper and lower tubular sections, forming a part of the frame, said lower tubular section communicating with the nozzle, outwardly opening flap valves normally closing the ends of the lower tubular section, inwardly opening flap valves normally closing the ends of the upper tubular section, a discharge pipe communicating with the upper tubular section, bellows extending throughout the lengths of the sides of the frame and adapted to communicate with the transversely disposed sections through the ends thereof, arms connected with the bellows, a power device embodying a large pulley, a connecting link 'eccentrically connected with said pulley, said connecting link being pivotally connected with the adjacent ends of the arms whereby movement of said pulley acts to operate the arms and bellows, drawing air 

